Photos: Sweden's hydrogen bomb-proof data centre

Inside Bahnhof's underground data centre stronghold.

In 2009, internet service provider Bahnhof opened the doors to its underground Pionen data centre in the White Mountains of Stockholm, Sweden. The facility shares the same name and location as a 1970s atomic shelter built by the Swedish government during the Cold War. If that's not enough mystique for you, it also hosted Wikileaks' servers and has the architectural opulence of a James Bond villain's underground lair. Check out the rest of the gallery for an in-depth tour. [Image credit: Bahnhof]

Pictured: The Pionen underground bunker, prior to Bahnhof's extensive reconstruction. The site was decommissioned by Sweden’s Civil Defense over 20 years ago. [Image credit: Bahnhof]

The Pionen data centre is buried beneath 30 meters of granite bedrock, with three physical datalinks set into the mountain. During the renovation process, Bahnhof blasted holes into the mountain's interior to create 4,000 cubic meters of additional space.

The conference room floor has been painted to resemble the surface of the moon. Bahnhof founder Jon Karlung has gone on record saying it's his favourite room in the facility. [Image credit: Getty Image]

Bahnhof founder Jon Karlung shows off the controversial Wikileaks servers ensconced in Pionen White Mountains. Wikileaks' primary web server was hosted by Bahnhof between October 2010 and July 2011. The Wikileaks database is now offline, but still contain around 200GB of data. [Image credit: Getty Image]

In 2009, internet service provider Bahnhof opened the doors to its underground Pionen data centre in the White Mountains of Stockholm, Sweden. The facility shares the same name and location as a 1970s atomic shelter built by the Swedish government during the Cold War. If that's not enough mystique for you, it also hosted Wikileaks' servers and has the architectural opulence of a James Bond villain's underground lair. Check out the rest of the gallery for an in-depth tour. [Image credit: Bahnhof]

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